Passing command line parameters to mongo while executing some js file

[hdev ml]

Hi,

Bigger picture is
Write a shell script to
1. Process some data outside mongodb
2. import that into mongodb into a temporary collection
3. copy that data into an old collection.

I want to write a common function for #3. So I wrote a function like

var copyCollection = function(from, to) {

        var cursor = db[from].find();
        while(cursor.hasNext())
        {
                db[to].save(cursor.next());
        }
}


And from the script I will execute it as

./mongo some.js

But how do I pass the "from" and "to" parameters from shell script? Is there any tweak to do that?

Appreciate the help
Thanks
Harshad

[Dwight Merriman]

use --eval on the mongo command line

p.s. insert() might be a little faster than save() - not sure

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[hdev ml]

Thanks Dwight. Will try that.

[robo -]

I've been trying to do the same thing. Can someone please provide a
simple example of how to use the --eval to pass arguments on the
command line to a javascript file being passed in?

Thanks,

robo

[Eliot Horowitz]

mongo --eval "db.foo.insert( { x : 1 } )"

[robo -]

Thanks a million. That gives me a starting point from which I can expand upon.

robo